they same to be the same box from whatr i saw when i just pulled a CA18DET box apart. Nissan pintara even looks the same (ca20). A proper det box has more ribbing on the outer case for some reason unsure as too way?
All i did when putting a ca in a mates ke70 and in my 35 coupe, Was
1.cut the standard enigine mount brackets off the cross memeber.,Used range rover v8 mounts to bolt them to the motor
2. LOweerd motor and box (as one unit) into the car and scribed (marked) where brackets needed to be cut to ensure motor sat in the correct location. Both height, Sided to sside and fron t to back.
3. cut brackets as required and tack welded on.
4. Mark shifter location and cut out
5. messure and make up gearbox cross memeber 30x30 (25x25 maybe?? can't remember) box and some flat bar.
Plenty of room for motor just remove standard fan and use a thermo.
Radiator wither get a bigger corona one standard ca one or have a three row core put in the ke70 one and get a switch for the thermo put in the bottom tank.
Use standard ca box and install a good clutch